/* 1.去除默认样式 设置底色 */
body * {

  /* background-color: #f1f1f1; */
  margin: 0;
  padding: 0;
  height: auto;
  width: auto;
  user-select: none;
}
/* 外壳 */
.div1 {
  /* overflow: hidden; */
  height: 600px;
  width: 100%;
  background-color: while;
  text-align: center;
  padding: 10px;
  /* border: 1px solid gray; */
  margin-top: -5px;
}




/* 2.准备导航的基本样式 */
ul {
  /* position: absolute; */
  /* /* top: 50%; */
  /* left: 10%;  */
  /* margin: auto; */
  width: auto;
  max-width: 1000px;
  min-width: 500px;
  height: auto;
  margin: auto;
  /* margin-left: 25px; */
  padding: 2px;
  /* transform: translate(-50%, -50%); */
  display: flex;
  list-style: none;
  /* border: 1px solid red; */
  text-align: center;
  
}

/* 3.1 准备导航里面图标的基本样式 */
ul li {
  position: relative;
  margin: 0 2px;
  width: 40px;
  height: 40px;
  text-align: center;
  /* border: 1px solid gray; */
}

ul li span {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  line-height: 40px;
  font-size: 16px;
  background: #fff;
  color: #262626;
  transform-origin: top;
  text-align: center;
  cursor: pointer;
}

ul li span:nth-child(2) {
  background: #3b5999;
  color: #fff;
  transform-origin: bottom;
  transform: rotateX(90deg) translateY(50%);
}


/* 3.1.1 鼠标悬停 旋转 上移 */
ul li span {
  transition: all 0.5s;
}

ul li span:nth-child(1) {
  transform-origin: top;
}

ul li:hover span:nth-child(1) {
  transform: rotateX(90deg) translateY(-50%);
}

ul li:hover span:nth-child(2) {
  transform: rotateX(0deg) translateY(0);
}

ul li:hover {
  transform: translateY(-10px);
}

/* 3.2 导航下面图标的底色 */
/* ul li:nth-child(1) span:nth-child(2){
  background: #3b5999;
}
ul li:nth-child(2) span:nth-child(2){
  background: #55acce;
}
ul li:nth-child(3) span:nth-child(2){
  background: #dd4b39;
}
ul li:nth-child(4) span:nth-child(2){
  background: #0077b5;
}
ul li:nth-child(5) span:nth-child(2){
  background: #e4405f;
} */

/* 4. 添加底部的阴影效果 */
ul li::before {
  content: "";
  position: absolute;
  left: 0;
  bottom: -10px;
  width: 40px;
  height: 8px;
  background: #000;
  border-radius: 50%;
  transition: .5s;
  opacity: 0;
  filter: blur(2px);
  transform: scale(0.8);

}

ul li:hover::before {
  transition-delay: .5s;
  opacity: .2;
  transform: scale(1);
}


/* 顶部 div */
.top_div{
  width: 98%;
  height: 90px;
  padding: 1px;
  /* border: 1px solid gray; */
  margin-top: -9px;
  margin-bottom: 10px;
  min-width: 800px;
  /* display: flex; */
}
/* // 登录 div */
.login-container-div {
  display: flex;
  width: 180px;
  height: 30px;
  padding: 5px;
  float: right;
  margin-top: 1px;
  margin-right: 40px;
  text-align: center;
  /* border: 1px solid red; */

}
/* 登录账号头像 */
.login_img {
  /* display: none; */
  width: 30px;
  height: 30px;
  margin-right: 2px;
  border-radius: 50%;  /*更正为 50% */
  background-image: url("../img/260.jpg");

}
/* 登录账号 */
#login-container{
  width: 100px;
  height: 30px;
  line-height: 30px;
  text-align: left;
  padding-left: 2px;
  background-color: #cdcdcd;
  border-radius: 10px;
  /* border: 1px solid red; */
}
#login-container:hover::before{
  content: "用户账号";
  height: 30px;
  width: 80px;
  background-color: #ccc;
  color: #f9f9f9;
  position: absolute;
  z-index: 1;
  padding: 5px;
  border-radius: 5px;
  margin-top: 35px;
  margin-left: -20px;
  font-size: 14px;
}
/* 退出登录 */
.qx_login{
  width: 50px;
  height: 30px;
  line-height: 30px;
  /* border: #999 solid 1px; */
  text-decoration: solid;
}
/* //退出  事件 */
.qx_login:hover::before{
  content: "取消登录状态，返回登录界面";
  height: 30px;
  width: 200px;
  background-color: #ccc;
  color: #f9f9f9;
  position: absolute;
  z-index: 1;
  padding: 5px;
  border-radius: 5px;
  margin-top: 35px;
  margin-left: -120px;
  font-size: 14px;
}

/* 公式编号 */
.div2 {
  display: flex;
  width: 720px;
  height: auto;
  min-height: 45px;
  min-width: 600px;
  /* border: 1px solid gray; */
  margin: auto;
  padding: 1px;
  text-align: center;
  /* margin-left: 23.5%; */
}
.a-bq {
  height: 20px;
  padding: 0px 8px;

  border-right: 1px solid gray;
}
/* 时间 */
.data-now {
  height: auto;
  width: 110px;
  margin-left: 1px;
  /* border: 1px solid gray; */
  float: left;
  font-size: 12px;
}
#Tis {
  color: red;
}
/* 标题 */
.tittle {
  width: 350px;
  height: 50px;
  font-size: 20px;
  /* border: 1px solid gray; */
  margin: 20px auto;
  /* margin: -50px auto; */
  /* margin-left: 23%; */
  /* margin-top: -50px; */
  /* margin-bottom: 20px; */
}
/* iframe */
.div3 {
  /* margin-left: 22.5%;
  margin-top: 20px; */
  overflow: hidden;
  width: 560px;
  height: 450px;
  margin: 20px auto;
  /* border: 1px solid gray; */
}
.my_Iframe {
  width: 100%;
  height: 100%;
  frameboder: 0;
}
iframe {
  border: none;
  overflow: hidden;
}

.btn-group.dropup {
  position: relative;
  margin-top: 0; /* 根据需要调整 */
  }
  .dropdown-menu {
  position: absolute;
  top: 100%;
  left: 0;
  z-index: 1000;
  display: none; /* 默认隐藏 */
  min-width: 160px;
  padding: 5px 0;
  margin: 2px 0 0;
  list-style: none;
  font-size: 14px; /* 根据需要调整 */
  }

.page{
  width: 130px;
  float: right;
	margin-top:5px;
}
/* 跳转输入框 */
.fanye-1{
	width:40px;
	height:20px;
	padding:5px;
}
/* 跳转按钮 */
#btn-s{
  font-size: 13px;
  border: none;
  background-color: antiquewhite;
}
span {
  cursor: pointer;
}
/* 距离隔间 */
.jl{
  margin-top: 10px;
  height: 100px;
  width: 100%;
  /* border: #999 solid 1px; */
}

/* 扩展功能div */
.kz_gn_div{
  display: block;
  width: 90%;
  height: auto;
  padding: 5px;
  margin: 50px 5%;
  border-top: 1px solid gray;
  min-width: 800px;
}
.tuoz_title{
  margin-top: -5px;
  width: 100%;
  height: 20px;
  padding: 2px;
  background-color: #cdcdcd;
  color: white;
}

/* 扩展功能下 具体所有功能公用css */
.kz_gn{
  /* 去掉li前面的点 */
margin-top: 20px;
display: inline-block;
height: 30px;
width: 32%;
text-align: center;
line-height: 30px;
background-color: #cdcdcd;
border-right: 1px solid rgb(138, 138, 138);
}
.kz_gn_div>li>a{
  /* 去掉a标签的下划线 */
  font-size: 16px;
  color: white;
  /* text-decoration: none; */
  text-align: center;
}

/* 底部主框 */
.footer{
display: block;
width: 90%;
margin: 100px 5%;
height: 100px;
/* border: 1px solid gray; */
background-color: #cdcdcd;
padding: 5px;
margin-bottom: 100px;
min-width: 800px;
}

/* .DM_user {
  height: 18px;
  width: 150px;
  font-size: 9px;
  margin-bottom: 10px; 
  margin-right: 10px;
  float: right;
  color: gray;
  border: 1px solid gray; 
} */

/* 底部p标签 */
.db_p{
  display: inline-block;
  text-align: left;
  color: #999;
  height: 25px;
  width: 45%;
  /* border: 1px solid gray; */
  margin-bottom: 10px;
}
